*{
    padding:0;
    margin:0;
    border:none;
}

html{
    height:100%;
    width:100%;
}

body{
    height:100%;
    width:100%;
    font-size:14px;
}

body header{
    width:100%;
    height:100%;
    position:fixed;
    top:0;
    left:165px;
    right:0;
    background-color:#ffffff;
    color:#000000;
}

body header #header_box{
    position: relative;
    width: 100%;
    height: 56px;
    border:2px solid black;
}

body header #header_box h1{
    margin-top: 6px;
    position: absolute;
    left: 3px;
}

body header #header_box #message_box{
    margin-top: 13px;
    position: absolute;
    left:75%;
}

body header #header_box #user_box{
    margin-top: 13px;
    position: absolute;
    left:80%;
}

aside{
    width:165px;
    position:fixed;
    top:0;
    left:0;
    bottom:0;
}

#main{
    width:100%;
    height:100%;
    padding:60px 0 0 165px;
    box-sizing:border-box;
}

#con{
    height:100%;
    overflow:auto;
    background-color:#ffffff;
    color:#000000;
    position: relative;
}

body aside{
    background-color: #33ccff;
}

#aside_head{
    position: relative;
    text-align: center;
    margin-top: 10px;
    margin-bottom: 15px;
}

#aside_head i{
    width: 100px;
    height: 60px;
    color: #ffffff;
    transform: rotate(45deg);
}


#aside_body{
    position: relative;
}

.option{
    height: 40px;
    width: 100%;
    text-align: center;
    line-height: 100%;
    font-size: 18px;
    font-weight: 700;
    padding-top: 15px;
    margin-top: 5px;
    color: white;
}

.option:hover{
    background-color: #33dbff;
    color: #c2ffff;
}

/* 通用容器 */
.g_con{
    position: absolute;
    left: 0;
    top: 0;
    border: 4px solid #33ccff;
    border-radius: 15px;
}

.g_title{
    font-size: 16px;
    position: relative;
    color: grey;
}

#datetime{
    position: absolute;
    top: 20px;
    right: 8px;
    /*text-align: right;*/
}